<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
 <script>
    function getRandom(m,n) {
    return parseInt(Math.random()*(n - m)+m);
}       
function game() {
var n = getRandom(1,10) 
while (true) {
var a = prompt("请输入数字") 
a = parseInt(a) 
if (a == n) {
alert("猜对了") 
break
} else if (a < n) {
alert("猜小了")
}else if (a > n) {
alert("猜大了")
}
}
}
game()
</script>
</body>
</html>